41 tree->SetAutoFlush(4000000);
42 tree->Branch(
"px",&px);
43 tree->Branch(
"py",&py);
50 for (
int i = 0; i < 25000000; ) {
R__EXTERN TBenchmark * gBenchmark
R__EXTERN TRandom * gRandom
virtual void Start(const char *name)
Starts Benchmark with the specified name.
virtual void Show(const char *name)
Stops Benchmark name and Prints results.
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
static TFile * Open(const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose, Int_t netopt=0)
Create / open a file.
1-D histogram with a float per channel (see TH1 documentation)}
2-D histogram with a float per channel (see TH1 documentation)}
virtual void SetSeed(ULong_t seed=0)
Set the random generator seed.
static TString Format(const char *fmt,...)
Static method which formats a string using a printf style format descriptor and return a TString.
A TTree represents a columnar dataset.